In addition to satisfying the requirements of Section 1152.155, an applicant for registration as a senior property tax consultant must:
(1) acquire at least 25 credits as provided by Section 1152.159;
(2) have performed or supervised the performance of property tax consulting services as the applicant's primary occupation for at least four of the seven years preceding the date of application; and
(3) pass the examination adopted under Section 1152.160 or hold a professional designation in property taxation granted by a nonprofit and voluntary trade association, institute, or organization:
(A) whose membership consists primarily of persons who represent property owners in property tax and transactional tax matters;
(B) that has written experience and examination requirements for granting the designation; and
(C) that subscribes to a code of professional conduct or ethics.